论文部分内容阅读
小型冷阴极辉光放电管常用来作为仪器的电压指示元件,这就要求冷阴极辉光放电管(以下简称辉光放电管)着火电压稳定性能要好.特别是作为照相机闪光灯工作电压指示元件时,对其着火电压稳定性要求更为严格.图1示出了照相机电子闪光电路原理图.从图1我们可以看到,辉光放电管的着火电压指示闪光灯的工作电压.如果它的着火电压下偏着火中心电压数值太大,则闪光灯的发光指数偏低,如上偏着火中心电压的数值太大,则达不到规定的可以进行照相的时间.因此,放电管着火电压稳定性能的好坏直接影响照相机整机质量.用作为照相机闪光灯工作电压指示元件的辉光放电管,其着火电压只允许在着火中心电压±10v范围内波动.
Small cold cathode glow discharge tube commonly used as a voltage indicator device, which requires cold cathode glow discharge tube (hereinafter referred to as glow discharge tube) firing voltage stability is better.Especially as a camera flash operating voltage indicator, Its ignition voltage stability requirements more stringent Figure 1 shows the schematic diagram of the camera electronic flash circuit from Figure 1 we can see that the glow discharge tube ignition voltage indicates the working voltage of the flash if it is firing voltage Partial center of fire voltage value is too large, then the flash light emitting index is low, as the deviation of the fire center voltage is too large, you can not reach the prescribed time for photography, therefore, the discharge tube ignition voltage stability is good or bad direct Affect the quality of the camera as a whole .Glow discharge tube used as an indicator of the working voltage of the camera flash, its ignition voltage only allows fluctuations in the ignition center voltage ± 10v range.